57. What contributes the most to one'sheart rates, according to the first paragraph?
A) Our bodyweight. 
B) The consumption of energy.
C) The rates of our breathing. 
D) The amount of oxygen provided.
58. Hormones are tested in the researchbecause they can affect __
A) one's bodyweight 
B) one's blood pressure 
C) one's way of living 
D) one's metabolic rate 59. What was foundabout the 20 overweight men in the process of the research?
A) They controlled what to eatself-consciously.
B) They took in much fewer calories thanusual.
C) They lost appetite because of lack ofphysical activity.
D) They were provided with a healthier dietthan before.
60. Why does Damian Bailey agree with theidea of appetite loss at high altitudes?
A) He experimented with the new weight lossplan in the Andes.
B) He found no other reasons for his lossof weight in the Andes.
C) He researched the related subject in theAndes.
D) He lost much weight in the high altitudeAndes.
61. Lippl talks about the way of losingweight by spending holidays on mountains with __
A) casualness 
B) inaccuracy 
C) uncertainty 
D) confidence

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